A team of paleontologists has uncovered the first known adult Tyrannosaurus rex trackway, revealing stride length, speed and behavior of the iconic predator.
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Analysis of three T. rex teeth suggests the predator maintained a body temperature around 36 °C, comparable to modern elephants and far warmer than contemporary crocodilians.
UCLA researchers used enamel isotope analysis to estimate a Tyrannosaurus rex body temperature of about 97 °F, supporting the idea that the iconic predator was warm‑blooded and active.